IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0571209
(2004-09-09)
|
등록번호 |
US-7724442
(2010-06-14)
|
우선권정보 |
IL-157837(2003-09-10) |
국제출원번호 |
PCT/IL2004/000814
(2004-09-09)
|
§371/§102 date |
20061107
(20061107)
|
국제공개번호 |
WO05/024969
(2005-03-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
99 인용 특허 :
7 |
초록
▼
There is provided an optical device, having a light-transmitting substrate (20) having at least two major surfaces parallel to each other and edges; a display light source; optical means for coupling light from the light source into the substrate (20) by internal reflection, and at least one partial
There is provided an optical device, having a light-transmitting substrate (20) having at least two major surfaces parallel to each other and edges; a display light source; optical means for coupling light from the light source into the substrate (20) by internal reflection, and at least one partially reflecting surface (22) located in the substrate (20) which is non-parallel to the major surfaces of the substrate wherein the source emits light waves located in a given field-of-view, that the light waves are collimated, that an angular resolution is defined for the optical device, and wherein the angular deviation between any two different rays located in one of the collimated light waves, is smaller than the angular resolution.
대표청구항
▼
What is claimed is: 1. An optical device, comprising: a light-transmitting substrate having at least two major surfaces parallel to each other and edges and at least one partially reflecting surface located in the substrate which is not parallel to a major surface of the substrate; a display light
What is claimed is: 1. An optical device, comprising: a light-transmitting substrate having at least two major surfaces parallel to each other and edges and at least one partially reflecting surface located in the substrate which is not parallel to a major surface of the substrate; a display light source emitting collimated light waves located in a given field of view; and at least one optical element for coupling light waves from the display light source into the substrate by total internal light wave reflection, the optical element having at least one plane surface disposed at an angle to a major surface of the substrate; wherein a single point on a boundary line between the edge of the plane surface and one of the major surfaces of the substrate is illuminated by two different light rays from one of the collimated light waves from the display light source that enter the substrate in two different locations and are trapped inside the substrate by total internal reflection, the trapped light wave covering the entire area of the substrate. 2. The optical device according to claim 1, wherein the optical element is disposed at an angle to major surfaces of the substrate to cause one of the rays to illuminate directly the boundary line, and a second of the rays to be reflected first by the other of the major surfaces of the substrate before illuminating the boundary line. 3. The optical device according to claim 1, wherein said at least one partially reflecting surface couples the collimated light waves trapped by internal reflection out of said substrate. 4. The optical device according to claim 1, wherein collimated light waves located in said field-of view reach an eye of an observer. 5. The optical device according to claim 1, wherein the reflectance of the at least one plane surface, changes monotonically along the plane surface of the optical element. 6. The optical device according to claim 1, wherein the reflectance of the at least one partially reflecting surface, changes gradually along the plane surface of the optical element. 7. The optical device according to claim 1, wherein the reflectance of the at least one partially reflecting surface, changes continuously along the plane surface of the optical element. 8. The optical device according to claim 1, wherein the reflectance of the at least one partially reflecting surface produces a field of view having uniform brightness. 9. The optical device according to claim 1, wherein the reflectance of the at least one partially reflecting surface produces a field of view having a predefined brightness. 10. The optical device according to claim 1, wherein the display light source is a liquid crystal display. 11. The optical device according to claim 1, wherein the display light source is an organic light emitting diode display. 12. The optical device according to claim 1, wherein the display light source is a virtual retinal display. 13. The optical device according to claim 10, wherein the display light source is a liquid crystal display light source operating in such a way that the Fourier transform of a desired image is formed on the plane of the liquid crystal display. 14. The optical device according to claim 1, wherein the substrate is partially transparent, to enable see-through operation. 15. The optical device according to claim 1, further comprising an opaque surface located on or in the substrate, so as to block the entrance of light traversing the substrate from an external scene. 16. The optical device according to claim 1, further comprising a variable transmittance surface located so as to attenuate the entrance of light traversing the substrate, for controlling the brightness of light passing through the device from an external scene. 17. The optical device according to claim 16, wherein the transmittance of the variable transmittance surface is determined according to the brightness of light directed to traverse the substrate. 18. The optical device according to claim 1, wherein the at least one partially reflecting surface reflects trapped light waves into a direction calculated to reach both eyes of an observer. 19. The optical device according to claim 1, wherein the device is mounted in an eyeglasses frame. 20. The optical device according to claim 1, wherein the device is located in a head-up-display. 21. The optical device according to claim 1, further comprising a lens located next to one of the major surfaces of the substrate. 22. The optical device according to claim 21, wherein the lens is an ophthalmic lens designed to correct aberrations of a viewer's eye. 23. The optical device according to claim 1, further comprising a collimating lens located next to the second of the major surfaces of the substrate. 24. The optical device according to claim 23, wherein the collimating lens is a focusing lens designed to focus a collimating image to a predefined distance. 25. The optical device according to claim 23, wherein the lens is a Fresnel lens. 26. The optical device according to claim 23, wherein the lens is a dynamic lens. 27. The optical device according to claim 26, wherein the dynamic lens is electronically controlled. 28. The optical device according to claim 24, wherein the collimating lens is a Fresnel lens. 29. The optical device according to claim 24, wherein the collimating lens is a dynamic lens. 30. The optical device according to claim 29, wherein the dynamic lens is electronically controlled. 31. An optical device comprising: a light transmitting substrate having at least two major surfaces parallel to each other and edges and at least one partially reflecting surface located in the substrate which is not parallel to a major surface of the substrate; a display light source emitting collimated light waves located in a given field-of-view; and at least one optical element for coupling light waves from the display light source into the substrate by total internal light wave reflection, the optical element having at least one plane surface disposed at an angle to a major surface of the substrate; wherein a single point on the boundary line between the edge of the plane surface and one of the major surfaces of the substrate, is illuminated by two different rays from one of the collimated light waves from the display light source that enter the substrate in two different locations and are trapped inside the substrate by total internal reflection such that the trapped light wave contiguously covers the major surfaces of the substrate without forming gaps or stripes.
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